Finding the Fourth Proportional to 70,583.27, 105,866.19 and 20,662.83

Step by Step Solution

1. Step 1: Write the proportion equation
   70,583.27 : 105,866.19 = 20,662.83 : x
2. Step 2: Convert to fraction form
   70,583.27/105,866.19 = 20,662.83/x
3. Step 3: Cross multiply
   70,583.27x = 105,866.19 × 20,662.83
4. Step 4: Simplify right side
   70,583.27x = 2,187,495,086.72
5. Step 5: Solve for x
   x = 2,187,495,086.72/70,583.27
6. Step 6: Final answer
   x = 30,991.70